On Fri, Mar 30, 2012 at 03:36:06PM -0700, Tejun Heo wrote: > Currently, cgroup removal tries to drain all css references. If there > are active css references, the removal logic waits and retries > ->pre_detroy() until either all refs drop to zero or removal is > cancelled. > > This semantics is unusual and adds non-trivial complexity to cgroup > core and IMHO is fundamentally misguided in that it couples internal > implementation details (references to internal data structure) with > externally visible operation (rmdir). To userland, this is a behavior > peculiarity which is unnecessary and difficult to expect (css refs is > otherwise invisible from userland), and, to policy implementations, > this is an unnecessary restriction (e.g. blkcg wants to hold css refs > for caching purposes but can't as that becomes visible as rmdir hang). Good to see this patch. Now annyoying rmdir hang with blkcg should be gone. Thanks Vivek _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/containers
